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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Ramona Municipal WD

Monochloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

88

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20146.58 ppb128ND - 21.0 ppb
20152.05 ppb163ND - 22.0 ppb
20161.23 ppb167ND - 3.90 ppb
2017ND160ND
2018ND120ND
20190.600 ppb163ND - 3.70 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-124790-903-0930ND
2014-02-124790-902-090015.0 ppb
2014-02-124790-901-083016.0 ppb
2014-02-124790-900-00002.30 ppb
2014-05-154790-903-094012.0 ppb
2014-05-154790-902-09205.10 ppb
2014-05-154790-901-085721.0 ppb
2014-05-154790-900-08303.00 ppb
2014-08-074790-903-0940ND
2014-08-074790-902-09154.50 ppb
2014-08-074790-901-0845ND
2014-08-074790-900-0810ND
2015-02-044790-901-0835ND
2015-02-044790-902-09106.60 ppb
2015-02-044790-903-0940ND
2015-02-044790-900-0805ND
2015-05-124790-903-0825ND
2015-05-124790-902-0800ND
2015-05-124790-901-090022.0 ppb
2015-05-124790-900-0940ND
2015-08-124790-901-0840ND
2015-08-124790-900-0920ND
2015-08-124790-903-0745ND
2015-08-124790-902-0812ND
2015-11-104790-903-0745ND
2015-11-104790-901-0845ND
2015-11-104790-900-09304.20 ppb
2015-11-104790-902-0810ND
2016-02-104790-900-09302.30 ppb
2016-02-104790-903-07553.40 ppb
2016-02-104790-902-08153.90 ppb
2016-02-104790-901-08452.20 ppb
2016-05-104790-900-11202.00 ppb
2016-05-104790-903-0900ND
2016-05-104790-902-09252.10 ppb
2016-05-104790-901-11503.70 ppb
2016-08-094790-901-0955ND
2016-08-094790-900-0925ND
2016-08-094790-903-1040ND
2016-08-094790-902-1020ND
2016-11-084790-901-0805ND
2016-11-084790-903-0925ND
2016-11-084790-902-0950ND
2016-11-084790-900-0845ND
2017-02-074790-903-0820ND
2017-02-074790-902-0750ND
2017-02-074790-900-1000ND
2017-02-074790-901-0906ND
2017-05-094790-900-0810ND
2017-05-094790-901-0845ND
2017-05-094790-903-0920ND
2017-05-094790-902-1000ND
2017-08-084790-902-0910ND
2017-08-084790-903-0935ND
2017-08-084790-900-0822ND
2017-08-084790-901-0750ND
2017-11-084790-902-0900ND
2017-11-084790-903-0825ND
2017-11-084790-900-1010ND
2017-11-084790-901-0930ND
2018-02-074790-900-0940ND
2018-02-074790-903-0800ND
2018-02-074790-901-0900ND
2018-02-074790-902-0825ND
2018-05-084790-901-0840ND
2018-05-084790-900-0915ND
2018-05-084790-903-0745ND
2018-05-084790-902-0815ND
2018-08-074790-900-0756ND
2018-08-074790-901-0830ND
2018-08-074790-903-0930ND
2018-08-074790-902-0900ND
2019-02-054790-903-0920ND
2019-02-054790-901-0748ND
2019-02-054790-902-0901ND
2019-02-054790-900-0821ND
2019-05-074790-903-0815ND
2019-05-074790-902-0750ND
2019-05-074790-901-0900ND
2019-05-074790-900-0930ND
2019-08-074790-900-09302.40 ppb
2019-08-074790-903-07503.50 ppb
2019-08-074790-902-0815ND
2019-08-074790-901-09003.70 ppb
2019-11-054790-900-0930ND
2019-11-054790-903-0755ND
2019-11-054790-902-0820ND
2019-11-054790-901-0900ND